Method and device for the production of metal composite foils for battery cells

1. A method for producing a battery cell, which includes at least the following steps:

a) reshaping a first pouch foil into a first pouch half by means of a first molding device with a first recess;

b) reshaping a second pouch foil into a second pouch half by means of a second molding device with a second recess;

c) separating the first pouch foil and the second pouch foil from a pouch foil supply while the first and second pouch halves are in the first and second molding devices, respectively;

d) inserting a cell stack into the first molding device and the first pouch half located therein;

e) subsequently bringing together the first molding device with the first pouch half located therein and the second molding device with the second pouch half located therein;

f) at least partially connecting the first and second pouch halves to form a battery cell; and

g) cutting an outer contour of the first and second pouch halves or the battery cell, following at least partially connecting the first and second pouch halves to form a battery cell and while the first and second pouch halves are in the first and second molding devices, respectively.

2. The method according to claim 1 , wherein the reshaping of the pouch foil into a pouch half is carried out by means of

an atmospheric positive pressure or negative pressure, or

at least one electromagnetic pulse EMP.

3. The method according to claim 1 , wherein the pouch half is fixed in the first or second molding device by means of a negative pressure.

4. The method according to claim 2 , wherein the first or second molding device is heated.

5. A device for producing a battery cell by the method according to claim 1 , wherein the device comprises:

a first and a second molding device and, in each case, at least one fixing device,

a reshaping device,

a feed device for cell stacks,

a positioning device for bringing together the end faces of the molding devices,

a connecting device, and

a first cutting device.

6. The device according to claim 5 , wherein at least one of the first and second molding devices has a heating device.

7. The device according to claim 5 , wherein the first cutting device is designed at least for cutting a length or a contour of at least the pouch foil, the pouch half or the battery cell.

8. The device according to claim 5 , further comprising a second cutting device for cutting an endlessly fed pouch foil.